How are stars made?
Stars are made of very hot gas.
This gas is mostly hydrogen and helium, which are the two lightest elements.
Stars shine by burning hydrogen into helium in their cores, and later in their lives create heavier elements..
How do stars produce energy quizlet?
Huge sphere of glowing gas mostly made up of hydrogen and they produce energy through the process of nuclear fusion. … The process of nuclear fusion gives off light and heat. You just studied 17 terms!
How do stars evolve?
The evolution of star is governed by two competing forces — gravity pushing in and pressure from fusion pushing out. If gravity wins, the star collapses, if pressure wins, the star expands. … In less massive stars, like the Sun, the star will collapse a bit, start fusing helium and become a much larger Red Gaint .
What are the 7 types of stars?
There are seven main types of stars. In order of decreasing temperature, O, B, A, F, G, K, and M.
Why do stars die?
Stars die because they exhaust their nuclear fuel. … Really massive stars use up their hydrogen fuel quickly, but are hot enough to fuse heavier elements such as helium and carbon. Once there is no fuel left, the star collapses and the outer layers explode as a ‘supernova’.
How do stars function?
They all work by the same basic principle: they fuse atoms in their cores to make heat and light. It’s how a star works. … That process of fusion releases heat and light. This process is called “stellar nucleosynthesis”, and is the source of many of the elements in the universe heavier than hydrogen and helium.
How long does a star live for?
about 10 billion yearsThe life of a star is determined by how large it is. Stars live different lengths of time, depending on how big they are. A star like our sun lives for about 10 billion years, while a star which weighs 20 times as much lives only 10 million years, about a thousandth as long.
What is the death of a star called?
supernovaWhen a high-mass star has no hydrogen left to burn, it expands and becomes a red supergiant. While most stars quietly fade away, the supergiants destroy themselves in a huge explosion, called a supernova. The death of massive stars can trigger the birth of other stars.
What is the star life cycle?
A star’s life cycle is determined by its mass. The larger its mass, the shorter its life cycle. A star’s mass is determined by the amount of matter that is available in its nebula, the giant cloud of gas and dust from which it was born.
What type of star is Procyon B?
DQZProcyon B/Spectral type